Filter



Oct. 16, 1928. `B J, PERSON 1,688,152

- FILTER Filed NOV. 16, 1927 back-wash valve tporting Patented Geit. 16, 1928.

UNITED STATES BENJAMIN J. rIERsoN, or JOnNsroWN, NEW YORK, AssIGNon To D. rrr. MANUFAC- JOHNSTO'WN, NEW YORK, A

TURING COMPANY, INC., OF

PATENT OFFICE.

CORPORATION OF NEW serial No. 233 s.

YORK.

FILTER.

Application mea November 1e, 1927. i My invention consists in the novel features hereinaftery described, reference being had yto the accompanying drawing which illustrates one embodiment of the same, se` lected by me for purposes of illustration, and the said invention is fully disclosed in the following description' and claims.

The object of my invention is to provide a very simple iilter for water (or other liquids) having a single back wash valve movable from its normal position,

instantly to a position in which the water' is passed in reverse direction through the filteringk screen, or screens, to kremove any foreign matter which has collected thereon and may be as quickly restored to normal position, the filter being,r provided with a sediment bowl, a baffle plate interposed between it and the inlet port througlrwhich thev water to be filtered enters, said sediment bowl being provided with a clean-out aperture, and remove able closure therefor. y In the accompanying drawings, Fig. 1 represents a vertical sectionaly View of my improved filter.

Fig. 2 is'a transverse section through the on linep2-2 of Fig. 1. n Myimproved filter consists of a lhollow body which is preferably formed of cast metal, as aluminum for example, and comprises the upper memberV l, and lower member, 2, provided with meeting flanges, 3, 4, united upon a gasket, 6, by screws or bolts, 5, or connected together in any other desired way so as to be liquid tight. The upper body member is provided withan inlet aperture', 7, communicating with a vertically movable, quick acting gate valve, 9, for controlling the inlet port10, adjacent tothe lowerportion of the valve chamber, and the back-wash port, 11,

interior 'of the hollow body. The upper body member'is also provided with a sub'- stantiallyY horizontal iltering'member which formsa partition between the lower portion'of the hollow body, yand an Vo utlet chaniber, 12, in the upper part of the body member, 1, the filtering member being disposed between the inlet port, 10, and back-wash port, 11and comprising a perforated `sup plate, 13, and one'k or more ,filter located above the inlety 4 p open, andit will be port, 10, and both communicating with they I ay horizontal baffle screens, 14, which may be formedof fine mesh, non-oorrodible metallic wire gauze or any other suitable material preferably placed below i the perforated Supporting plate, 13.` I prefer to provide the` upper body member, 1, with an annular face, 15, to engage and support the marginal por-` tions of the filter member, anda central depending lug, 16, to support the central portions thereof, and the filter member may be connected to the body member in any desired way. I prefer to connect the screen, or creens, and the perforated plate to the annular face, 15, by screws, 17, one of which is shown in Fig. 1, and to support the filtering member centrally by an attaching screw, 16, passing through a central aperture therein and cla ping the filter member upon the central lug, 16. i

The upper body member 1, is also provided with an outlet aperture, 18, communieating with the outlet chamber, 12, and proi vided lwith means for connecting it, the de livery pipe, 19, leading to a faucet, or faucets. Theinlet aperture, 7, is provided Wi-thmeans for connecting it with` a service' orV supply pipe 20, from thesource of supply. The valve, 9, is provided with a gate portion Wide enough vto close either theinlet port, 10, or back-washport, 11, audits stem, 21, ywhich isV of less diameter than the Jbackwash port, extends Vthrough an aperture, 8a, formed in the upper part of the body member, 1, which is providedwith a stuffing box, 22. The valve stem, 21, is preferably smooth and provided at its upper end with a knob or handle, 23, so that the valve is quick acting; The normal position of the valve is its upper position, in whichit closes the back-wash port, 11, leaving the inlet port, 10,

held in its normal posi- `of Ithe stuffing box On although it may beheld in 'by other means if desired.

tion by the friction the valve stem, raised position side adjacent to the inlet zontal shoulders,

by the Vupper faces ly extending lugs,

port, 10, with hori- 24, conveniently formed of a plurality-of inwardp n plate, 26, secured in position by screws, 26a, threaded into said lugs, the said baille plate extending entirely across "il" 25, upon which is placed vwith a, recessed portion, 29', which communicates with the interior of the main body and wliiclr'willv form a 'receiving cavity of smaller crosssectional area thanthe sedilment bowl'.

t wash port f Assuming that the iilter `is installed, for

.ex'ai'nple, between the supply pipe, 20, and

the delivery pipe, 19, the latter leading to the point or points `of use where suitable 'faucets 'are provided, and the back-wash valve being in position to close the .bacic- `and leave theinlet port open, Abody of the filter .will normally the entire e be -lled with water, the'flow of which is "controlled by the faucetsat the points of v and spreading out laterally above -port will tend to sweep,

use. a faucet is opened to draw water from the source of supply the water will 'enterthfe filter through the inlet port, 10,

the baille plate 'after passing through said port, will have its `velocity checked, tending to depositany sediment carried by `it upon the baille while the continued movement of the water along the upper face of the baffle plate in ageneral direction'away, from the inlet or roll or move the deposited sediment over the inner edge, 26a, of the baffle plate, Where it will fall into the sediment bowl formed in the lower body member,.2. lThe water isdrawn oif through the outlet port, 18, above the iilter member, and as this memberextends entirely across 'the upperbody member, and provides apertures throughoutits area, having combined cross-sectional areas much greater than the cross-sectional area of the inlet port, the water passes upward 4through the filter member with very smallv velocity, 'straining foreign matter which has not been deposited and which is collected on the lower face ofthe filter member.v During the periods when water is'not `passing through the filter, 'there will ,be opportunity for precipitation pf further forel-'gn matter or sedia ment, if any, from 'theewaterwin the-filter body, and this lsediment ywill fall to the bott'oin of the filter chamber, or upon thevbafl'le plate. and inthe latter case willA be swept of the baille Aplate into the sediment rbowl 'the `next time 'water k'is allowed to enter the port, 1(3). f x y j A"Obvioisly in theuse of any fil-ter [for f water, there' will 'collect upontheiilter memof the baille i easily done.

- 1'0, andY open the ber, foreign matter which, if it remains, provides a breeding ground for bacteria, and if permitted to remain too long may form a coating through which all the water must'subsequently pass. lt is desirable to have the filter member cleaned frequently and to so construct it that this may be lt will be seen that inmy iilter, it only necessary to depress the quick acting valve, which will close the inlet port, A back-wash port, 9, and to open the clean-out aperture when the water from the service pipe, 20, will enter the outlet chamber, 12, from lwhich it cannotkpass into the delivery pipe while the faucets are closed, andl the water rwill therefore be forced downward through the filter' member, cleaning the lower face of the screen inthe most eilicient manner, and discharging the foreign matter removedv therefrom as the clean-out aperture. llVhen the water runs clear, the plug orclosure, 28, ,can be replaced to prevent waste vofwater and the valve can be instantly liftedinto its normal position, and the filter is l ready forfurther operation. lf any foreign matter from the lower face of theY filter member should re main on thebaiile' plate, it would be swept oil into `the sediment bowl as ysoon as a faucet was opened, and water enters the filter through the inlet port.

`What I claim and desire to Vsecure by Letters Patent is 1. A filter comprising a hollow body having an outlet chamber inits upper portion, and a sediment bowl in its lower portion, a horizontal filter member; separating the outlet' chamber from the sediment bowl, and provided with an inlet port `communicating with said body below the filter member, and an outlet port communicating with said outlet chamber, and' a horizontally disposed baffle plate located adjacent to the lower edge of thel inlet port, and extending therefrom less ,than all the way to the opposite side of the hollow `body and having portions of greater width than the inlet port, whereby the entering liquid-will spread laterally upon and over said baille plate-,and deposit sedi,- menttliereon, which will Abe carriedroff of said plate by the forward `movement. of the llo liquid Aand be deposited in therbottom of the u l sediment bowl.

:2; A filter comprising a hollow body hav;

`v,ing an outlet chamber in its upper portion,

'an outlet port communicating withsaid our let chambenand a-liorizontally disposed baffle ,platelocated adjacent to the lower edgek of the inlet port, and extending there'- from less than all the way to the opposite side of the hollow body and having portions of greater width than the inlet port, saidy body having an inlet aperture communicating with the inlet port and having a baolrwash port communicating'with the inlet aperture and with said body above the ilter member, and a Asingle valve mechanism for effecting the closing oi' one port and the opening of the other port vwhen moved in either direction, said main body being provided with a clean-out aperture and a removable closure therefor.

3. A filter comprising a hollow body having an outlet chamber in its `upper portion and a .sedimentl bowl in its lower portion, a

horizontal filter member separating the outlet chamber from the sediment bowl, and provided with an inlet port communicating with said body below the lilter member, and anV outlet port communicating with said outlet chamber, and a horizontally disposed baille plate located adjacent to the lower edge of the inlet port, and extending therefrom less than all the way to the opposite side of J the hollow body and having portions or greater width than the inlet port, said body beino rovided with an inlet a Jerture coml munioating with said inlet port connecting the inlet outlet chamber,

port, a back-wash aperture with the and a gate valve having a gate portion for closing a time, and a valve stem of less diameter than said ports, extending to the outside ol the hollow body, said body being' provided with a clean-out aperture below said baille plate, and a detachable closure for said aperture.

l. A lter comprising a hollow body provided with a horizontally disposed filter member dividing it `into two chambers, said body having annular portions for engaging the marginal portions of the filter member, and a downwardly extending lug secured to said filter member, substantially centrally thereof, said body being provided at one side with a back-wash port communicating with the chamber above the filter member, and an inlet port communicating with the chamber below the filterv member, and having an inlet port communicating with both ports, a gate valve for closing one or other of said ports, provided with a valve stemk extending to the exterior of said body, a stuffing box for said valvestem, frietionally holding the valve in adjusted position, said body being provided with an outlet aperture above the iilter member, and a clean-out aperture below the filter member, and a detachable closure for the clean-out aperture.

In testimony whereof I aliix my signature.

BENJAMIN J. PIERSON.

one of saidnports at l 

